Face AngleP28M / P28 Mid has a slightly open face angle, P97 has a open face angle. A more open face lifts shots more easily; a more closed face keeps the puck lower.
Curve DepthBoth curves share the same depth (Moderate).
LieBoth curves share the same lie (null). Lie affects how the blade sits flat on the ice at your natural skating posture.
Curve TypeP28M / P28 Mid is a Toe curve (toe-focused, better for wrist shots and toe drags). P97 is a Mid curve (balanced and all-purpose).